413 Content Too Large
The request body exceeds the server limit.
What it means
Formerly "Payload Too Large". The server may close the connection.
What your client should do
Send a smaller body, compress it, or use chunked or multipart upload if the API offers it.
Should you retry?
Only after you change the request.
Security angle
Size limits defend against unrestricted resource consumption (OWASP API4).
Try it
The free practice API returns this status on demand, with the headers a well-behaved API would send. Call GET /api/play/status/413 from Endpoint Client and open the Explain tab.
Defined in RFC 9110. All status codes and headers